21202231112 has 32 divisors (see below), whose sum is σ = 40208762880. Its totient is φ = 10480247040.

The previous prime is 21202231111. The next prime is 21202231129. The reversal of 21202231112 is 21113220212.

It is not an unprimeable number, because it can be changed into a prime (21202231111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466937 + ... + 510327.

It is an arithmetic number, because the mean of its divisors is an integer number (1256523840).

Almost surely, 2^21202231112 is an apocalyptic number.

It is an amenable number.

21202231112 is a deficient number, since it is larger than the sum of its proper divisors (19006531768).

21202231112 is a wasteful number, since it uses less digits than its factorization.

21202231112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44093 (or 44089 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21202231112 its reverse (21113220212), we get a palindrome (42315451324).

The spelling of 21202231112 in words is "twenty-one billion, two hundred two million, two hundred thirty-one thousand, one hundred twelve".